Hello from the Boro

Just joined today, fairly new to Wii hacking, but pretty experienced with PC/Cable TV matters!

Had a go with trying to run HBC today - was bored. The Wii was updated to 3.4E recently, but managed to run the Twilight Hack, installed HBC, thought I had all the IOS stuff installed properly and downgraded to 3.2E successfully, but none of the apps run on Homebrew. They all say "Error - not a valid Wii application", or somesuch. Any clues anyone? Would appreciate some help!